Phase Offset - Agilent Technologies FieldFox N9923A User Manual

 Then
 Then
 Enter a time value using the numeric keypad, the ▲|▼ arrows, or the rotary
 Press a multiplier key. Learn about multiplier abbreviations on page 18.

Phase Offset

Phase offset mathematically adjusts the phase measurement by a specified
amount, up to 360°. Use this feature in the following ways:
Improve the display of a phase measurement. This is similar to the way you
would change the reference level in an amplitude measurement. Change the
phase response to center or align the response on the screen.
Emulate a projected phase shift in your measurement. For example, if you
know that you need to add a cable and that the length of that cable will add a
certain phase shift to your measurement, you can use phase offset to add that
amount and simulate the complete device measurement.
You can set the phase offset independently for each measurement trace.
How to set Phase Offset
 Press Scale / Amptd
 Then
 Then
 Enter a value in degrees using the numeric keypad, the ▲|▼ arrows, or the
Averaging
Trace Averaging helps to smooth a trace to reduce the effects of random noise on
a measurement. The FieldFox computes each data point based on the average of
the same data point over several consecutive sweeps.
Average Count determines the number of sweeps to average. The higher the
average count, the greater the amount of noise reduction.
An average counter is shown in the left edge of the screen as Avg N. This shows
the number of previous sweeps that have been averaged together to form the
current trace. When the counter reaches the specified count, then a „running
average‟ of the last N sweeps is displayed.
Average Count = 1 means there is NO averaging.
This setting can be changed at any time without affecting calibration accuracy.
How to set Trace Averaging
 Press BW 2.
 Then
 Enter a value using the numeric keypad. Enter 1 for NO averaging.
 Press Enter.
26
More
Electrical Delay
knob.
More
Phase Offset
rotary knob. Press Enter
where N is the current count setting.
Average N
N9923A FieldFox User's Guide